12V Geared Stepper Motor 15mm PM With 150:1 Gearbox and D-Shaped Shaft
KC-GM12-15BY 12V Geared Stepper Motor
The KC-GM12-15BY is a 12v geared stepper motor combining a 15 mm permanent magnet stepper motor with a 150:1 gear reduction gearbox. The assembly uses bipolar drive, a D-shaped output shaft and a four-wire connector for integration into small positioning and motion-control mechanisms.
Product Configuration
This configuration is a 15mm geared stepper motor with a permanent magnet motor structure, black gear reduction housing, 150:1 ratio and D-shaped output shaft. It is intended for projects where reduced output speed and increased mechanical reduction are required within a small motor assembly.
Electrical And Performance Specifications
| Parameter | Specification |
|---|---|
| Brand | Kechen Motor |
| Model | KC-GM12-15BY |
| Motor Type | Permanent magnet geared stepper motor |
| Rated Voltage | 12 V DC |
| Coil Resistance | 36 Ω ± 10% per phase at 20 °C |
| Number Of Phases | 2 phases |
| Motor Step Angle | 18°/step |
| Excitation Method | 2-2 phase excitation |
| Drive Mode | Bipolar drive |
| Pull-Out Torque | > 900 g·cm at 700 PPS |
| Maximum Pull-Out Frequency | > 900 PPS |
| Maximum Pull-In Frequency | > 700 PPS |
| Insulation Class | Class E for coils |
| Insulation Resistance | ≥ 50 MΩ at 500 V DC |
| Operating Temperature | −10 °C to +55 °C |
Gearbox And Mechanical Specifications
| Parameter | Specification |
|---|---|
| Gearbox Type | Gear reduction gearbox |
| Gear Ratio | 150:1 |
| Gearbox Length | 9.2 mm |
| Gearbox Reference Length | 10.8 mm |
| Gearbox Housing | Black housing |
| Gearbox Front Face Width | 10.8 mm |
| Mounting Hole Thread | M2 |
| Gearbox Surface Treatment | Lubricated internally |
| Output Shaft Type | D-shaped shaft |
| Output Shaft Diameter | 3.0 mm (+0 / −0.06 mm) |
| Output Shaft Extension | 6.0 mm (+0 / −0.1 mm) |
| Shaft Flat Length | 5.2 mm |
| Shaft Flat Dimension | 1.95 ± 0.03 mm |
| Motor Body Diameter | 15 mm |
| Motor Reference Diameter | 13.4 mm (+0 / −0.1 mm) |
| Motor Reference Length | 10.8 mm |
| Overall Assembly Length | 25.8 mm drawing reference |
| Front Mounting Plate | 20 mm × 12.8 mm |
| Mounting Holes | 2 × Ø2.1 mm |
| Mounting Hole Center Distance | 20 mm |
| Mounting Plate Corner Radius | 2 × R2 |
| Central Front Diameter | Ø3.0 mm (+0 / −0.06 mm) |
| Rear Reference Shaft Diameter | Ø5 mm |
| Rear Shaft Projection | 1 ± 0.075 mm |
| Reference Detail X | 0.4 mm / 0.1 mm |
Wiring And Connector
| Parameter | Specification |
|---|---|
| Connector | MOLEX 51021-0400 |
| Connector Pitch | 1.25 mm |
| Wire Specification | UL1571 AWG30 |
| Wire Length | 90 mm drawing reference |
| Connection Type | 4-wire bipolar |
| Phase A | Black (A) |
| Phase B | Brown (B) |
| Phase A Negative | Red (A−) |
| Phase B Negative | White (B−) |
Excitation Sequence
| Step | Phase State |
|---|---|
| Step 1 | Phase A on, Phase B on |
| Step 2 | Phase B on, Phase A− on |
| Step 3 | Phase A− on, Phase B− on |
| Step 4 | Phase A on, Phase B− on |
15mm 150:1 Geared Stepper Motor Dimensions
Engineering Advantages
150:1 Gear Reduction
The gearbox reduces motor output speed and increases mechanical reduction for controlled low-speed positioning.
15 mm Permanent Magnet Motor
The motor diameter supports integration where installation space is limited while retaining a conventional two-phase bipolar stepper architecture.
D-Shaped Output Shaft
The 3.0 mm D-shaped shaft provides a defined mechanical interface for couplings, gears and other driven components.
4-Wire Bipolar Connection
The four-wire connection is suitable for bipolar stepper control and uses a MOLEX 51021-0400 connector with 1.25 mm pitch.
Payment
Shipping
KC-GM12-15BY FAQ
What Type Of Motor Is The KC-GM12-15BY?
It is a permanent magnet geared stepper motor using a 15 mm motor body, two-phase bipolar drive and a 150:1 gear reduction gearbox.
Is This 12V Geared Stepper Motor Supplied With An Encoder?
An encoder is not specified in the current KC-GM12-15BY product data. Encoder requirements should therefore be confirmed separately before ordering.
What Output Shaft Does The KC-GM12-15BY Use?
The reference configuration uses a 3.0 mm D-shaped output shaft with a 6.0 mm extension and a 5.2 mm flat section length.
What Gear Ratio Is Used In This 15mm Geared Stepper Motor?
The current configuration uses a 150:1 gear ratio. Final gearbox parameters should be confirmed against the approved sample for the project.
What Connector And Wiring Configuration Are Used?
The reference design uses a MOLEX 51021-0400 connector with 1.25 mm pitch, UL1571 AWG30 wire and a four-wire bipolar connection.
Should The Drawing Dimensions Be Used Directly For Final Mechanical Design?
The listed dimensions are reference values. Final dimensions and electrical parameters should be confirmed using approved samples and the project-specific KC-GM12-15BY configuration.
